김연지 (Kim Yeon Ji) - 물감 (눈이 부시게 - The Light in Your Eyes OST Part 6)

힘내 (Way to go) - 칠전팔기 (Team Never Stop)

Simkl's Christmas

KYUHYUN (규현) - Slow, Slowly (천천히, 느리게)

박다빈 (Park Da Bin) - I Promise You [Come and Hug Me - 이리와 안아줘 OST Part 6]

은하, 키썸 (EUNHA (GFRIEND), Kisum) - Mr. Stranger [절대그이 - My Absolute Boyfriend OST Part 3]

KYUHYUN (규현) - Was It Love (사랑이었을까)

4MEN (포맨), David Yong - My Way (Prod. 윤민수 of VIBE) (School 2021 학교 2021 OST Part 2)

태연 (TAEYEON) - 혼자서 걸어요 (Prod. by 나얼)

Breakthrough on the Mountain Road

KYUHYUN(규현) – The Parting (이젠, 안녕)